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2,800-lb Capacity. Upgrade your vehicle's rear suspension with these maintenance-free helper springs. Sturdy microcellular urethane springs cushion bumps and help support a heavy load to level your ride and minimize sway. No-drill installation.
Features:
Specs:
Towing or hauling a heavy load can cause rear sag as your factory suspension compresses under the weight of the load. This means that the rear axle is trying to support not only the extra load but also the weight of your vehicle. And because there is less weight on your front axle, your front tires make less contact with the road, which causes problems with traction, steering, and braking. SumoSprings upgrade your vehicle's factory suspension to level your vehicle, improve driving performance, and keep your ride comfortable.
SumoSprings provide progressive load control - the more you load them, the stiffer they become. With a lighter load, the springs will compress easily for soft engagement and a less bumpy ride. The closed-cell urethane material allows for smooth contact between the springs and your vehicle. And the springs act like a shock absorber to dampen road vibration.
The springs can also compress by as much as 80 percent to support a heavy rear load and to help your factory suspension bear up under the load. This evens out the weight, which levels your vehicle and ensures that your front tires are making better contact with the road. A level ride means that you have improved driving control, ensures safe headlight aim, and helps to minimize sway. The springs also support your factory suspension, which helps prevent sagging and reduces bottoming out.
The springs work independently from one another to support each side of your vehicle. This action helps to reduce body roll when you make a sharp turn. This also helps compensate for an off-center load.
These microcellular urethane springs are tough. They resist abrasion, oil, salt, and UV rays that can more quickly wear out other springs, and they perform well in temperatures ranging from -25 F to 200 F (-33 C to 93 C).
SumoSprings compress vertically with minimum expansion to the sides, so they won't be damaged by nearby mechanical parts and they fit safely into tighter spots. And unlike air springs, SumoSprings require no maintenance or adjustment.
The helper springs are custom designed to fit your vehicle, and they install easily - no drilling required.
Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.
Speaker 1: Today on our 2016 Ram 4500, we're going to be taking a look at, and showing you how to install the Sumo Spring Solo Custom Helper Springs for the rear axle. Ask for part number SSR-309-54.If you've ever hauled a heavy load or had a big trailer behind your Ram, you've probably experienced what a lot of us do, when the back end starts to squat down, we may get a little bit of sway and some body roll back there. And when that squatting happens, we're putting a lot of unwanted strain and stress on the rear suspension. It's going to wear things out over time and really, our tires aren't where they should be and our suspension isn't be where it should be either.So the back end is getting pushed down, the front end is getting lifted up slightly, which means our tires aren't going to make full contact, we're going to have irregular tire wear, as well as our headlights being out of alignment. But upgrading the rear suspension is definitely a help with that. It's going to support the load back here, and keep our suspension where it should be, nice and level and it's going to prevent as much squatting, and it's also going to help with body roll because it's going to be able to counteract that and not sway as much.And since it's not pushing down so hard and we have the extra support in the back, it's not lifting up so much in the front, so we'll have better tire wear, better steering response and your headlights will be realigned.So now that we've gone over some of the benefits, and seen what they look like, we'll show you how to get them installed.So here's what our helper springs are going to look like once we have them installed.
Now these are going to replace our factory Jounce stops, and they're going to install in between the frame and our axle.Now here's our factory bump stop compared to our new spring, and you can see there's quite a bit of difference there. Our helper springs are going to provide us with extra support when we're loaded down, whereas our factory Jounce stop is really just there to prevent the frame from hitting the axle. These are going to improve the stability and comfort of our truck whenever hauling a heavy load or towing a heavy trailer. It's going to do that because whenever the suspension is loaded down and begins to come down, this is going to make contact with the axle, and help support that extra load in there. It's also going to absorb a lot of the bumps and shocks we feel when we're driving down the road, and minimize sway, so we can have a lot more comfortable ride.Now, our springs are going to have a progressive rate, which means that if we have a light load, they're going to engage softly, but if we have a heavier load, the stiffer they're going to get.
They're going to compress mainly vertically and have very little outer expansion. So you don't have to worry about any other components that are going to be close to it.Each one of our springs is going to work independently from each other, so it's going to help with those off-center loads, uneven terrain or even when we're turning really hard or taking evasive maneuvers. Our helper springs are going to be completely maintenance free. We're not going to have to worry about air lines, or tubing and worrying about monitoring the pressure inside. It's going to be a simple, one time installation, and we don't have to mess with it anymore.Our springs are going to be made out of a high density, micro-cellular urethane, and it's going to resist damage caused by oils, road salts and UV rays, and is going to work in temperatures from -25 all the way up to 200 degrees fahrenheit.
Our springs are going to have a 2800 pound load capacity. But keep in mind these are not meant to increase the payload of your truck, they're just there for extra support when we have those heavy loads in the back.To begin our installation, we're going to come to the rear axle and right above that we'll have our factory Jounce stop. I already went ahead and sprayed a little bit of spray lubricant on there. It's always a good idea to soak it down because these bolts can rust, because there really isn't anything protecting them, especially if you have a salt truck like we have here.You're going to want to grab a 16mm socket, and as you know you have a bolt on the back side as well as on the front of our bump stop, holding it in place. So we'll pull those out, and you want to hold onto the hardware, because we are going to re-use it.
Now on each side, we're going to have our spring, two spacers, a smaller spacer and a plate, and we're going to have several pieces of hardware and which one we use is to be determined by how many spaces we're going to use. If we use both of them, we use the long one, if we use just one of the large spacers, we use the middle one, and if we don't use either of these, we use the short one.We'll start out by taking our plate . you'll notice the center section is going to have this recessed area in it. We want to take our factory bolts, so the threads are coming up through that area where the recess is. And we'll take one of our large spacers, line it up with the hole that's on top of our spring, and then we'll take the small spacer . this is going to be so that the bolts can clear everything. We'll set that on top, then we'll take our plate with the bolts facing up and set it directly down.Now again, since we're using one of our large spacers, we're going to be using the middle length bolt. So we'll loosely thread the bolt in, then we can grab a 7/32 Allen socket and tighten it up.Now the reason why we put one spacer in, is because our bolts are going to go back into the factory spot. So it's going to be sitting like this once it's installed, and a good rule of thumb is that you want about anywhere from a half inch to an inch of space between the bottom of the spring and the top of the axle when the truck is fully unloaded. So, if you need to bring the spring down closer to the axle, we could add another spacer in, or if it's too close to the axle, we could take the spacer out.We're going to take our spring, we'll line up our springs with the factory holes, we just want to get them loosely started by hand, there is going to be very limited space in here. We should be able to get our finger in there, just enough to get a couple of threads on there, and that'll support itself, then we'll get the other one started as well.Now because of the limited space, we're not going to be able to get a socket back on that bolt, but we can get an open ended 16mm wrench and we'll tighten it up. Now you want to tighten up a little bit, draw the plate up and then move to the other side so it doesn't get in a bind. Once we have both bolts tight on our spring, we're going to go and repeat that same process on the other side.That'll finish up your look at the Sumo Spring Solo Custom Helper Springs for the rear axle, part number SSR-309-54 on our 2016 Ram 4500.
Average Customer Rating: 4.7 out of 5 stars (2298 Customer Reviews)
2,800-lb Capacity. Upgrade your vehicle's rear suspension with these maintenance-free helper springs. Sturdy microcellular urethane springs cushion bumps and help support a heavy load to level your ride and minimize sway. No-drill installation.Very easy installation in about 20 minutes. Very ingenious concept as opposed to bolt on leaf style helper springs
I installed Sumo Springs on our 06 Xterra right after we bought our Casita 17' trailer. The back of the X squatted a bit more than I liked. I had also noticed before some tendency to bottom out if the car was full of people and stuff. These ingenious devices are a perfect solution for me! They are about 3/4" clear of being engaged with the axle when unloaded, so the ride is not overly affected, but progressively take up some of the weight when the back end starts coming down with load. It now sits very nicely with the trailer connected, no weight distributing hitch and stuff in the back, and no more bottoming. We've put a good number of miles on the X in the last year, towing and not towing, and they are still doing the job.
I should note, the back of my Xterra is lifted about an inch with AAL springs. If that were not the case, the Sumo Springs would be engaged all the time. That will vary with vehicle.
I will also note that they are non-adjustable, unlike airbags. I kinda like that, I didn't want to mess with adjusting air pressure and such. But once they do start kicking in as one or both wheels travel, they do stiffen it up quite a bit. I mean, there's no way around that; you can't take load without stiffening the suspension. As such I think they inhibit upward axle articulation a bit when 4-wheeling, but for us that's not a big deal. Since they do not connect to the axle, they don't affect downward articulation at all.
The pics are shortly after installation, one with the car unloaded, and two with trailer and gear loaded up.
I believe it’s going to be a great addition to my truck when pulling our RV. Looking forward to a smoother, more even ride. I left the 2x4 blocks in overnig8ht and drove around to ensure a good seat for the springs.
I originally purchased the yellow sumo for additional support when hauling a small trailer or taking trash to the dump so I wouldn’t strain the vehicles suspension that I just replaced . I also never like to see a truck squat . Yellows were too stiff when unloaded so I got these blues sumo and it was a great decision . The ride type is back to original “comfortable” and the sumo still provides great handling when cornering reducing body sway / shock absorbing bumps. A good investment !
Gave it 5 because of ease of install - note they use SAE threads 9/16, truck frame and oem is metric 15mm wrench. Makes no difference but don't use oem nuts on spring. I installed all shims supplied and this left about 3/4" gap so hoing its the best for my needs. Easy to reduce if needed.
I bought and installed the 1000lb Sumo Solo springs to help alleviate rear end squat on my 2024 GMC Canyon Denali when pulling my boat. My boat trailer has a long mono tongue with no weight distribution installed. The boat weighs in at about 5500lbs, the truck fender lip measures 38” high unloaded, once I dropped the hitch down on the ball and the Sumos picked up the load, the fenders measured 36.25” equating to an inch and 3/4 squat. Empty the Sumos have an apx gap of 7/8” above the frame rails. The Sumos were recommended over the Timbrens for my situation of infrequent towing with this truck and to maintain the best ride possible when not towing. So far my ride is virtually unchanged when empty and feels controlled when towing. Installation is straight forward but the instructions could be a little clearer with a diagram showing the intended location of the springs. Luckily an etrailer customer had already done the install and provided some pics so there was no question. I chose to remove the tires to have good access and I’d do it again this way. I supported the truck with a jack stand under the receiver. IMHO the proper method to locate the over frame upper clamp brackets is to push the forward clamp as far forward until it contacts the bed stiffener and you’ll be in the correct location then let all the hardware hang to position itself, tighten as required and enjoy.
These Sumo Springs were easy to install, even for a 70 year old guy. I tow a 7,000lb camper and even tho I have a nice WDH I still had som sag on my Tundra. These helped level it out when towing and got rid of “some” of the bounce. They were really a godsend when I overloaded the bed with about 2,000lbs of pavers. That weight squished the Sumos significantly but the truck drove and rode great. Better and less expensive than air bags.
The SumoSprings Solo came to the RV Resort today. I installed them on my Titan SV today in less than an hour. Only drove 10 miles with them and they are what I was looking for. In my opinion it was a needed upgrade and thumbs up!
I have had these on my Jeep Gladiator for over a year now and I still like them. Sumo Springs really help with sag when towing my Scamp camper trailer and when the truck bed is loaded with stuff. When it is cold outside they are stiffer and I can feel when they hit the stops on hard bumps. Sumo Springs are a very easy overload spring option with factory lift.
While these worked great for the first few months and helped level the load, they have now become deformed and squished out of shape permanently. We have a slide in camper that is on the truck for only for trips otherwise the truck is unloaded and off the bumps. I did not expect them to deform so much, and so easily after only a year of use.
Fairly simple to put on but need to work around the brake lines and bed cross beams. I haven’t tried it yet with weight. I have enclose pic of drivers side. Maybe can’t tell from the pic but there is space and flexibility around the lines around bolt.
Great upgrade from the oem jounce. Easy to install with 2 people but follow the install video and use a 1/2" deep socket with a long extension. Took about 30 minutes.
Straight forward, simple, replacement for OEM springs. These springs make contact with the lower arms all the time and definitely help dampen the bounce effect from a heavier steel bumper. Any rolling effect from uneven roadways and turning is also reduced, it feels the vehicle is more stable. For my situation, this is the first step to take before considering replacing shocks, etc., and is very economical. I'll give it more time, but I believe this is all I'll need to do. Thanks etrailer! Quick shipping!
These 1ton trucks are heavy, I went with the 8k front sumo springs. If you're lookingto soften up your ride all I can say from my experience, get you the medium to light rated sumo springs. I installed the timbren bump stops in the rear because I haul freight for a living & the front 8k sumo springs are overkill. When you hit good dips or bumps in the road its a ricochet effect.
They worked pretty good. They kept my vehicle from bottoming out when towing my 5th wheel camper. They also helped to avoid bucking and chucking upon acceleration. In addition to these though I also purchased RAC rear suspension enhancement springs but having towed with them yet. Hoping for some improvement in general handling.
Hello, i installed the Sumo springs on my 2020 M/B 2500 pleasure Way camper van 19.5 foot, if you do not want to go in for the full suspension upgrades for 5 to 6 thousand dollars the Sumo spring is a
decent up grade to help with sway, we aren’t off roaders campers
but they work nice in unimproved campsite. I have about 4500 miles on my camper since I installed them which took about a hour. It did raise the camper by about 1/4”.
I just used a floor jack and big flat screw driver for the back and deep well socket for the front ones. Sorry I didn’t take a video or picture. But so far I would recommend the sumo springs it is better then stock bump blocks.
And thanks to etrailer for getting me the right setup
for my camper.
These made a huge difference. I towed a travel trailer and the roads around me are pretty horrible. These springs made a big difference in our ride comfort and I couldn’t even tell they were there when unloaded. I highly recommend these if you tow on a regular basis.
The Supersprings smoothed out the camper trailer ride especially noticeable on bumpy roads. A good product that does what it’s supposed to do. If I ever get another camper I’ll get Supersprings again.
Very impressed. Stopped the Tacoma lean. Also helped with the trailer. I do use a distribution hitch I bought from etrailer. Just bought the sumo spring for other applications. Those little bitty factory bumps where junk. These help with lean, and off road hard bounce.They are great.
So glad I found these! Best upgrade for my Winnebago Era Touring Van. Simple to install. I only needed a floor jack to get it done. Van doesnt ride like a boat in a storm anymore. Highly recommend for Sprinter vans.
We pull an off-road teardrop camper with our 2013 Toyota Tacoma and were looking for a little help with the rear end sag when we have that hitched plus putting some weight in the back of the truck (firewood, water, etc). Our Tacoma is lifted (2.5") but the lift kept the stock springs with an added Deaver leaf to help with the notoriously soft Toyota springs. However, with the shell and ~300 pounds of weight in the back, it still sagged, especially with another 250 lbs of tongue weight from the trailer. The Sumos have eliminated that sag, even with bigger loads in the bed, eliminated body roll (also notoriously bad with Tacomas) and didn't destroy the ride for day to day driving. There might be a slight bit more stiffness when hitting speed bumps, but definitely not bad at all. If anything, I would say it IMPROVED the ride and handling.
The springs themselves were simple to install, less than half an hour start to finish. Some reviews have said they were bumping the frame after installing but we had about 1/2" gap on both sides. The only "specialty" tool would be a torque wrench capable of 90 lbs to get it to spec.
We considered Firestone air bags but after talking with the reps at e-trailer, we decided on these and couldn't be happier. Reasonably priced (half the price of air bags), no maintenance, great customer service...can't argue with anything at all.
First off, these won't fix worn out suspension components, they are designed to improve ride quality by reducing sag/porpoising, especially on heavier vehicles.
Our 2010 Roadtrek 210P (75k miles) is a great rv but essentially a big heavy tub going down the road. Has the tendency to lean and wallow front to back. New shocks and all suspension is good, as mentioned make sure that stuff is all in good shape.
Pics show the oem stops vs the SS stops. Big difference - you may assume ride gets harsh but not the case. The oem stops were very tired and didn't do much. The preload on the new SS stops is just about perfect - any weight changes are very progressive which takes the harshness out of the ride. I didn't really see any change to ride height either.
Road manners are improved, there's a bit more resistance to lean, but the main difference is that the front end doesn't try to change height as readily with the back end.
Not a big deal to install. Youbdont need to pull the wheels, just turn them side to side to get to the stops. Pop out the old stops and clean the retaining cups with a wire brush and some brake clean. I used syl-glyde on the new stops to help get them into place. I also used a crowbar under the stop to push it into the cup while making sure the 4 tabs captured the top of the stop. Final step was to lower the van and give it a drive, then check to ensure the fit was good. The key here is to clean the cup first and use a bit of lube on the new stop.
Very pleased and I'll be installing SS on the back end soon. Yup, they're pricey but they are good quality with a limited lifetime warranty.
2015 Frontier Crew cab Desert Runner (purchased the yellow Sumo Springs). Easiest install ever! 18mm deep socket and long breaker bar for breaking nuts loose. Removed factory bumpstop, install sumo bracket and retighten U bolts to 58 foot pounds. After installing both brackets, lifted back of truck up 4 inches to install sumo spring with blue lock tight on bracket bolt, tighten sumo spring onto bracket and lowered truck off the jack. Overall it raised the back of my truck bed 1 inch. Ride is stiffer with no bed roll in the turns. Loaded my 24 foot travel trailer with load leveler- equalizer bars and gained 3 inches (less “squat”.) Truck is level now vs nose high (without the sumo springs). Definitely an upgrade that was needed in 2015 when I first bought the truck!!!
These Sumo springs were a great upgrade. So easy to install, less than 20 minutes.
Easy to install , Itook the front tires off for easy access. If i had a lift i most likely would have not had to take the tires off
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